I etched my first PCB when I was 13 years old. I made it using transfer sheets and the junky Clad from RadioShack. It was all I knew at the time. Needless to say I found printed circuits to be fascinating. Today I’m 24 years old and I’ve made many PCBs along the way. As my capabilities as an engineer grew, my understanding of PCBs became more complex. Traces are microscopic. Vias connect multiple layers. The circuitry is dense with activity. The modern circuit board i ...